Three charges are at the corners of an equilateral triangle, as shown in the figure below. Calculate the electric field at a point midway between the two charges on the x-axis. (Let q1 = 9.00 ?C, q2 = 7.50 ?C, and q3 = −4.50 ?C.) Three charged particles lie in the x y-coordinate plane at the vertices of an equilateral triangle with side length 0.500 m. Positive charge q2 is at the origin. Positive charge q1 is in the first quadrant, along a line 60.0° counterclockwise from the positive x-axis. Negative charge q3 is at (0.500, 0).

Three charges are at the corners of an equilateral triangle, as shown in the figure below. Calculate the electric field at a point midway between the two charges on the x-axis. (Let q1 = 9.00 ?C, q2 = 7.50 ?C, and q3 = −4.50 ?C.) Three charged particles lie in the x y-coordinate plane at the vertices of an equilateral triangle with side length 0.500 m. Positive charge q2 is at the origin. Positive charge q1 is in the first quadrant, along a line 60.0° counterclockwise from the positive x-axis. Negative charge q3 is at (0.500, 0).